by cleaning or etching

by cleaning or etching · Cooperative Patent Classification (CPC)

Chemical and metallurgical processes, compounds, and materials.

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
MetricValue
CPC codeC23C16/0227
Official title{by cleaning or etching}
Display labelby cleaning or etching
Total patents660

Filing trend

Year-over-year patent counts classified under this CPC code.

Filing activity over the last five years is stable.

Patents filed per year
YearPatents
201528
201630
201747
201841
201951
202057
202161
202287
202377
2024102
202561
202618

Representative patents

Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.

Frequently asked questions

Answers are generated from the same data shown on this page.

What is CPC C23C16/0227?
CPC C23C16/0227 is the Cooperative Patent Classification code for “by cleaning or etching.”
How many patents are filed under CPC C23C16/0227 (by cleaning or etching)?
Our database includes 660 publications tagged with this CPC code.
Is patent activity under CPC C23C16/0227 growing?
Publication counts under this code: 102 in 2024 vs 61 in 2025 (latest complete years).